Antiskid overshoe



Jan. 25, 1938. -r. M. WALKER ANTISKID OVERSHOE Original Filed June 18, 1935 Patented Jan. 25, 1938 PATENT OFFI ANTISKID OVERSHOE Thomas M. Walker, Auburn, N. Y.

Substitute of application. Serial No. 27,256, June 18,1935. This application October 11, 1937,

Serial No. 168,523 I 1 Claim. (01. 152-16) This invention relates to certain new and useful improvements in anti-skid overshoes.,

The primary object of this invention is to provide an anti-skid overshoe adapted to be attached to a pneumatic tire in lieu of the usual anti-skid chains or similar metallic devices, the overshoes preferably being of rubberor rubber and fabric construction and carrying anti-skid elements or projections of like material that are effective to prevent skidding on ice or snow. as well as wet pavements and which will also operate on dry pavements without undue wear thereon as compared with the usual chains.

A further object of this invention is to provide an anti-skid and re-tread member capable of being applied to a pneumatic tire after the tread of the tire has worn smooth and said device may acter having spaced openings for the admission and entrance of air whereby'friction will be decreased and air may gain entrance to the tread surface and the covered surface of the pneumatic tire prevents over-heating.

A still further object of this invention is to provide a device of the above mentioned character in which the tread straps are arranged in staggered relation in order to add to the tread gripping qualities for preventing slippageof the tread with respect to the pneumatic tire with the resultant decrease in friction therebetween.

Other objects and advantages of the invention will become apparent during the courseof the following description, taken with the drawing, wherein,

Figure l-is a side elevational view of the device embodying-this invention illustrating the front thereof and showing the manner in which -the divided sections of the circumferential band are connected; I

- Figure 2 is a side elevational view illustrating the rear and undivided circumferentialretaining band;

Figure 3 is a top elevational view showing in detail the arrangement of the re-tread surface; and

Figure 4 is a transverse cross-sectional view taken on line 4 'a of Figure 1, looking in the direction of the arrows, showing the cross-sec- Jtional configuration of the anti-skid and re-tread The circumferential band 8 is provided, at-

spaced intervals with square projections 9 forming anti-skid traction elements adapted to pre-l vent longitudinal and lateral skidding.

Arranged on the circumferential band 8 between the square projections 9 in staggered relation is aseries of triangular-shaped projections l0 adapted to assist in preventing skidding both longitudinally and laterally. The triangularshaped projections III are formed integral with connecting straps vII which depend downwardly from the tread 'of the tire in an uneven or staggered manner. Y

On one side of the anti-skid device, the connecting straps II are adapted to be secured or formed integral with a continuous band I2 which is of a smaller diameter than the continuous band 8 to cause the anti-skid device to closely fit the tread I of the tire 5.

The other set of downwardly depending connecting straps II is secured to an interrupted band comprising sections [3, the ends of which are provided with fa mening elements which will be hereinafter fully described.

It is proposed to connect at least two downwardly depending straps -II to each divided section l3 and each divided section may be connected together by means of at least three tighteners M at spaced intervals between'the detachable'fasteners I5.

Each tightener 14 comprises a metal strap l6 secured to an end of one of the sections l3 by means of a fastening element l1 and secured in, the metal loop I6 is a link Hi, to one end of which is suitably secured a hook member l9 as at 20 having an arm or tightening lever 2| pivoted thereto so that the free end 22 of the lever may have its hooked portion 2-! engaging /the link I8. The lever 2l is adapted to pass through a loop or ring 24 pivotally secured to the /adjacent interrupted section l3 by means of alooped strap 25 held in place by a nut bolt 26.

The strap tightener above described is of a conventional form but it is to be noted that the hooked end 23 is locked in place by means of the interrupted sections l3, being in close engagement therewith whereby unlocking and detaching of the tightener will be prevented.

It is intended to provide the interrupted band l3 with three or more tighteners l4 arranged at equidistant points with respect to the circumference of the band and between the equi-distant spaced tighteners l4 there are provided separable fasteners |5 which comprise metal strap loops 21 and 28 connected-to the free ends of the sections l3 by means of nuts and bolts 29 and 30 respectively. A triangular shaped loop 3| is secured to the looped portion of the strap 21 and formed on the outer end of the triangularshaped loop 3| is an inwardly extending projection 32 which is more or less arrowhead-shaped for receiving the double hooked member 34 secured to the metal strap loop 28 on the adjacent section I3. The free ends of the double hook member 34 as at 35 are hook-shaped and are bent inwardly for preventing detachment thereof when the fastener is arranged in its operative position, but which may be easily separated by moving the members 3| and 34 angularly with respect to each other.

It is to be noted that the straps form openings 38 at spaced intervals to allow air passage adjacent the circumferential band 8 and tire v tread portion 1.

It is to be understood also, that the form of the invention herewith shownand described is to be taken as the preferred embodiment of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as claimed.

I claim:

An anti-skid overshoe of the character described, comprising an uninterrupted imperiorate circumferential band, traction increasing elements formed integral with the band and pro jecting therefrom, laterally extending straps integral with the band on opposite sides thereof and arranged in staggered relation, a traction increasing element rising from the band at the inner end of each strap to reinforce the latter, a continuous band of a diameter smaller than the circumferential band connecting the lateral straps on one side of the circumferential band,

strap sections connecting the other lateral straps,

strap tighteners for certain strap sections and separable fasteners for connecting the remaining strap sections.

THOMAS M. WALKER. 

